Lawful Tariff Engineering or Customs Fraud: What Actually Crossed the Border?
Lawful tariff engineering changes the goods to earn a lower duty. Customs fraud changes the account U.S. Customs and Border Protection receives, or leaves a known duty unpaid. For the engineer, buyer or broker who knows the product, the revealing question is where those accounts diverge: what the factory made, what the customer ordered, what crossed the border and what the importer declared.
Tariff Avoidance vs Tariff Evasion
Tariff avoidance through product design depends on the merchandise’s condition as imported. Tariff evasion means giving Customs a false account of the product, origin or value to escape the duty owed.
The Court of International Trade’s 2017 opinion describes Ford’s Transit Connect vehicles built in Turkey to fill cargo-van orders, imported with second-row seats and declared as passenger vehicles. The passenger-vehicle classification carried a 2.5% duty, against 25% for cargo vehicles. After clearance, before the vehicles left the port, a subcontractor removed the seats and made other changes. Customers received cargo vans.
Goods are classified as they arrive, and an importer may design them to pay less. Ford called the arrangement lawful tariff engineering. The government argued that the seat disguised what the vehicles really were. That put the seat itself, the vehicle’s design and the orders behind it at the center of the dispute.
In March 2024, Ford agreed to a $365 million government customs-penalty settlement covering duties and penalties. The agreement resolved allegations involving temporary seats and separate valuation errors, including omitted engineering and tooling costs. The overlap between product descriptions and payments recurs in customs fraud cases.
Real Finished Product Versus Sham Tariff Engineering
Aluminum extrusion tariff evasion allegations led to a $549.5 million settlement with Perfectus Aluminum in May 2026. The claimed finished product was a pallet.
The Justice Department’s civil settlement announcement alleged that Perfectus avoided duties on more than 2.2 million aluminum extrusions by presenting them as finished pallets. The extrusions were spot-welded together to look like functional pallets, according to the Department of Justice, but there were no customers and none were sold. The supposed finished product had a customs purpose and no buyers.
Grosfillex, a Pennsylvania patio-furniture company, agreed to pay $4.9 million in July 2025 to resolve allegations involving Chinese aluminum furniture parts. DOJ alleged that the company packaged some parts as sham furniture kits. The whistleblower’s complaint describes the product decisions behind that label: table legs imported with a cheap top to be discarded, and barstool bases and backs presented together even though the company intended to pair them with different parts in the United States.
The complaint quotes an engineering manager discussing how the components should appear to Customs:
We are also trying to avoid to show anything that could indicate we are buying separate components. The less info is visible, the best [sic] it is. We are buying kits: not seats and backs.
United States of America ex rel. Edward Wisner v. Grosfillex, Inc., whistleblower complaint quoting an engineering manager
The alleged plan was to buy separate parts and make Customs see kits.
A finished-product exclusion from antidumping and countervailing duties has to fit the order’s written description. A different HTS code does not remove goods the order still describes. The product, actual producer, entry date and applicable duty rate have to be connected to the same shipment.
Classification, Origin, and Value
Customs declarations describe what the goods are, where they came from and what they are worth. Each answer points to a different part of the business: product specifications, factory production and the money paid.
Essential Character Dispute Versus Knowing Customs Misclassification
The classification question asks what gives the article its character. The fraud question asks which product facts the company supplied or withheld, and what it knew. HTS misclassification fraud can put the commercial description and the customs description of the same goods side by side.
For some mixed products and retail sets, the Harmonized Tariff Schedule asks which material or component gives them their essential character. An unfinished product can count as the finished article when it already has that character.
The 2024 World Customs Journal paper Customs Tariff Classification and the Use of Assistive Technologies describes shortcuts reported by practitioners: copying a supplier’s code, reusing the last code or accepting a software suggestion. Its account identifies a commercial incentive inside the supplier’s recommendation:
Dishonest suppliers may have a vested interest in suggesting false tariff codes that attract no duty (and thus making their goods appear to be more competitive).
Customs Tariff Classification and the Use of Assistive Technologies, World Customs Journal, 2024
The paper also describes businesses connecting classifications to material numbers, catalog numbers and stock keeping units. That connection gives an insider a way to identify which product a reused code actually followed. What matters is the version on the entry.
How to Prove Country of Origin?
Country of origin depends on the production facts and the particular origin rule being claimed. The production records show what the factory actually did, including the materials it received and the processing it performed.
For third-country assembly under an existing antidumping or countervailing duty order, the anti-circumvention rules look at how much real production happened there. A shipping route describes where the cargo traveled. The factory evidence describes what happened to it there.
In the Evolutions Flooring case, the Department of Justice alleged false manufacturer and origin information for Chinese multilayered wood flooring. The investigation included factory visits in Thailand, shipment review, analysis of import records and interviews. That is how an origin claim reaches beyond the certificate to the production behind it.
Customs Value Beyond the Invoice
Customs undervaluation appears when the declaration leaves out value the importer owes duty on. The supplier’s invoice, the amount paid and separately supplied manufacturing inputs can sit in different systems. A lower invoice sent to the broker while accounts payable receives the real one creates a particularly direct conflict.
Tooling and components supplied to an overseas manufacturer, and qualifying royalties or seller proceeds, can affect customs value beyond the invoice price. Ford’s separate valuation allegations show why the product-design account and the payment account both matter. A convincing story about the seats leaves the costs of making the vehicle still to be examined.
What Evidence Is Needed to Prove Fraud?
Useful customs fraud evidence connects the rule, the product, the entry and knowledge of the discrepancy. The connection is strongest when the records identify the same merchandise and shipment throughout.
Grosfillex’s alleged kit plan shows the connection: the assembly plans described parts used separately, while the internal message called for presenting them as kits. A public manifest can identify the shipper, importer, route and cargo description. The factory and payment records show what happened behind that description.
The importer remains responsible for the duties when a broker prepares the entry. Engineering, sourcing and sales may hold facts that never reached the customs adviser. The gap between what they knew and what the adviser was told can be part of proving knowledge in customs fraud. We work with you to connect the product history, the entry and the decisions inside the business into a customs whistleblower case.
Tariff Evasion Red Flags Lead Back to the Shipment
Tariff evasion red flags include a catalog that contradicts the entry, a kit assembled into different products after import, an invoice that understates the payment and an origin claim unsupported by factory production. Each becomes more useful when tied to the goods and the company’s decisions.
Higher tariffs increase the incentive to hide what was imported. NBER Reporter’s 2009 article Measuring Tariff Evasion and Smuggling describes higher tariffs associated with larger reporting gaps in Hong Kong-to-China trade and more routing through Hong Kong for high-tariff goods.
The World Customs Organization’s 2015 paper Mirror Analysis and Revenue Fraud describes how comparing countries’ import and export records can identify discrepancies in value, quantity and weight. It then moves to particular products and trading countries, drawing on tariff information and detailed examination.
A 2020 Center for Economic Studies paper, Are Customs Records Consistent Across Countries? Evidence from the U.S. and Colombia, found that matching trading partners worked better than matching their individual shipments. It identified shared invoice or manifest numbers as a way to connect exports to the corresponding imports. The practical point for an insider is the same: the link between records matters as much as the discrepancy within them.
Knowledge becomes concrete when the business receives a warning. International Vitamin Corporation admitted that it used duty-free classifications for 32 products and continued the incorrect classifications for more than nine months after a consultant’s advice. It also failed to pay the earlier duties. In the Grosfillex settlement, the Justice Department separately alleged that the company left earlier forms uncorrected after learning they falsely excluded aluminum parts from duties. The response to the discovery becomes part of the case.
Who Can File a Qui Tam Lawsuit?
Employees and competitors can bring customs qui tam cases. A product insider may know what was built, a broker may know what instructions accompanied the invoice, and a competitor may recognize a price that cannot bear the duty on the goods being sold.
Sigma Corporation marketed welded outlets while describing them to Customs as steel couplings. Sigma had made no inquiry into whether the goods were covered for years. After repeated price undercutting, a competitor’s salesperson found the governing antidumping order and scope ruling within 24 hours. The competitor brought the whistleblower case, and a jury found Sigma liable for evading the duties. The importer paying its duties was competing against prices that left them out.
An insider in the supply chain may hold a different part of that connection. A whistleblower case under the False Claims Act can pay 15% to 30% of what the government recovers.
Sources
- Court of International Trade: Ford Transit Connect classification opinion, August 9, 2017
- Justice Department: Ford settlement agreement, March 2024
- Justice Department: Perfectus Aluminum settlement announcement, May 12, 2026
- Justice Department: Grosfillex settlement announcement, July 24, 2025
- World Customs Journal: Customs Tariff Classification and the Use of Assistive Technologies, 2024
- World Customs Organization: Mirror Analysis and Revenue Fraud, 2015
- Center for Economic Studies, U.S. Census Bureau: Are Customs Records Consistent Across Countries? Evidence from the U.S. and Colombia, 2020
The Design History You Know
If you worked on the product, bought its components or saw the instructions sent to the broker, tell our whistleblower experts what actually shipped. We put that history against the duty claimed, build your case with customs fraud whistleblower lawyers who understand the product and its tariff treatment, and stay beside you through the decisions ahead.
